7119

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Common mode chokes can be used in a variety of applications due to their ability to block common-mode noise from a circuit. 7119 application field and working principle provide the basis for understanding the various uses of this technology. In this article, the various fields of application, the physical operation, and the mounting techniques used in the 7119 series will be discussed.

Application Fields
Common mode chokes are commonly used in many different applications due to their ability to reduce common-mode noise. A few of these applications include motor drives, controllers, inverters, motors, and communications equipment. Motor drives use them to reduce conducted interference, and can be used to limit emissions, especially in the open-loop power drive of current or torque motors. Controllers use them to reduce interfering signals from other intelligent systems, while inverters use them to reduce system noise from field devices. Motors also benefit from the use of these devices as they can reduce interference with other components and systems. Finally, communications equipment often uses common mode chokes to reduce unnecessary noise associated with signals.

Working Principle
The 7119 series of common mode chokes are based on the principle of inductance. When a continuous electrical signal is introduced, the chokes create a magnetic field that impedes the flow of current. This impedance to current creates a voltage drop across the device, thus reducing the amplitude of the electrical signals. This is known as “inductive damping”, and can also be used to reduce the overall noise from a circuit.

Mounting Techniques
The selection of the mounting technique used in the 7119 series of common mode chokes is an important factor in determining the effectiveness of the device. The two primary mounting techniques used are pole mounting and mounting blocks. Pole mounting allows for easier installation, as the device can be adjusted at multiple angles, while mounting blocks provide a more secure option. Both mounting methods are designed to maintain the chokes\' electrical performance and maximize the reduction of common-mode noise.

Conclusion
Common mode chokes, such as the 7119 series, provide a reliable and effective way to reduce common-mode noise in a variety of applications. Through the use of inductance, these devices are able to create a magnetic field that impedes the flow of current, thus reducing the amplitude of the electrical signals. Additionally, the selection of the correct mounting technique is essential for maximizing the chokes\' performance. By understanding the application fields, workings, and mounting of this technology, engineers can be certain that they are utilizing the best components for their specific application.

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